/*
 * Copyright (c) 2009, The MilkyTracker Team.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - Neither the name of the <ORGANIZATION> nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 *  AudioDriver_MMSYSTEM.h
 *  MilkyPlay core
 *
 *  Created by Peter Barth on Fri Sep 10 2004.
 *
 */
#ifndef __AUDIODRIVER_MMSYSTEM_H__
#define __AUDIODRIVER_MMSYSTEM_H__

#include <windows.h>
#ifndef _WIN32_WCE
    #include <mmsystem.h>
#endif

#include "AudioDriverBase.h"

class AudioDriver_MMSYSTEM : public AudioDriverBase
{
    private:
        enum
        {
            // WAV Header & mixing buffer info
            NUMCHANNELS = MP_NUMCHANNELS,
            NUMBITS = MP_NUMBITS,
            NUMBYTES = MP_NUMBYTES,
            NUMBUFFERS = 2
        };

        bool paused;
        bool deviceHasStarted;

        HWAVEOUT hwo;
        WAVEOUTCAPS waveoutcaps;
        WAVEHDR wavhdr[NUMBUFFERS];
        mp_sword* mixbuff16[NUMBUFFERS];
        mp_sint32 currentBufferIndex;

        mp_uint32 sampleCounterTotal;

        bool timeEmulation;

        mp_uint32 sampleRate;

        mutable mp_uint32 lastSampleIndex;
        mutable mp_uint32 lastTimeInMillis;
        mutable mp_uint32 timeInSamples;
        mutable mp_uint32 sampleCounter;
        mutable CRITICAL_SECTION cs;

        static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);

        void kick();
    public:
        AudioDriver_MMSYSTEM (bool timeEmulation = false);
        virtual ~AudioDriver_MMSYSTEM ();

        virtual mp_sint32 initDevice(mp_sint32 bufferSizeInWords, mp_uint32 mixFrequency, MasterMixer* mixer);
        virtual mp_sint32 closeDevice();

        virtual mp_sint32 start();
        virtual mp_sint32 stop();

        virtual mp_sint32 pause();
        virtual mp_sint32 resume();

        virtual mp_uint32 getNumPlayedSamples() const;
        virtual mp_uint32 getBufferPos() const;
        virtual bool supportsTimeQuery() {
            return true;
        }

        virtual const char * getDriverID() {
            return timeEmulation ? "WaveOut (Vista)" : "WaveOut (old)";
        }

        virtual mp_sint32 getPreferredSampleRate() const {
            return 44100;
        }
        virtual mp_sint32 getPreferredBufferSize() const {
            return 8192;
        }
};

#endif